Home / 20,739,470.60-31,109,205.90-13,174,977.80

Finding the Fourth Proportional to 20,739,470.60, 31,109,205.90 and 13,174,977.80

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Solution

The fourth proportional to 20,739,470.60, 31,109,205.90 and 13,174,977.80 is: 19,762,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,470.60 : 31,109,205.90 = 13,174,977.80 : x
  2. Step 2: Convert to fraction form
    20,739,470.60/31,109,205.90 = 13,174,977.80/x
  3. Step 3: Cross multiply
    20,739,470.60x = 31,109,205.90 × 13,174,977.80
  4. Step 4: Simplify right side
    20,739,470.60x = 409,863,097,108,129
  5. Step 5: Solve for x
    x = 409,863,097,108,129/20,739,470.60
  6. Step 6: Final answer
    x = 19,762,466.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.